641
FZUS51 KBOX 011103
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
703 AM EDT FRI MAY 1 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-020000-
703 AM EDT FRI MAY 1 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRESSURE MOVES EAST OF THE COASTAL WATERS WITH THE APPROACH OF
AN AREA OF LOW PRESSURE FROM THE WEST. THE SYSTEM BRINGS WIDESPREAD
RAIN AND AT TIMES POOR VISIBILITY TONIGHT INTO THURSDAY, EVENTUALLY
LIFTING INTO MAINE BY FRIDAY. POTENTIALLY UNSETTLED THIS WEEKEND AS
AN AREA OF LOW PRESSURE MOVES OFF THE COAST OF THE CAROLINAS
SATURDAY AND MOVES NEAR THE BENCHMARK 40N/70W ON SUNDAY.
ANZ250-020000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
703 AM EDT FRI MAY 1 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
TODAY
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND W 1 FOOT AT 7 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND W 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS AROUND 10 KT, BECOMING E AFTER MIDNIGHT.
SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND S 2 FT AT
3 SECONDS. A CHANCE OF RAIN IN THE EVENING, THEN RAIN LIKELY
AFTER MIDNIGHT.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND NW 2 FT AT 5 SECONDS.
RAIN LIKELY, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND N
2 FT AT 5 SECONDS.
MON THROUGH TUE NIGHT
S WINDS 25 TO 30 KT WITH GUSTS UP TO
35 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-020000-
MASSACHUSETTS BAY AND IPSWICH BAY-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT
AT 10 SECONDS AND SW 1 FOOT AT 10 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND W 2 FT AT 6 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT
9 SECONDS AND W 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 3 FT AT
9 SECONDS. A CHANCE OF RAIN IN THE EVENING, THEN RAIN LIKELY
AFTER MIDNIGHT.
SUN
N WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 3 FT AT 9 SECONDS AND NW 2 FT AT 5 SECONDS.
RAIN LIKELY, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
4 FT AT 10 SECONDS AND NW 2 FT AT 4 SECONDS.
MON THROUGH TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-020000-
CAPE COD BAY-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NW
1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 7 SECONDS.
TONIGHT
SW WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 6 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 6 SECONDS. A CHANCE OF
SHOWERS IN THE AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND E 1 FOOT AT
10 SECONDS. RAIN.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND NE 1 FOOT AT
10 SECONDS. RAIN LIKELY, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
TUE AND TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-020000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
703 AM EDT FRI MAY 1 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
NW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND W 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND W 1 FOOT AT 4 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND S 2 FT AT
3 SECONDS. RAIN.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND SW 2 FT AT 4 SECONDS.
RAIN, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND W
2 FT AT 5 SECONDS.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT.
MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT.
TUE AND TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT.
SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-020000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
703 AM EDT FRI MAY 1 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
NW WINDS AROUND 10 KT, BECOMING W THIS AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND NW 2 FT AT
3 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND W
2 FT AT 4 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT AT
9 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SAT NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND SW
2 FT AT 5 SECONDS. RAIN. PATCHY FOG IN THE EVENING.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND NW 3 FT AT 4 SECONDS.
RAIN, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 4 TO 6 FT. WAVE DETAIL: SE 6 FT AT 9 SECONDS AND W
3 FT AT 5 SECONDS.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT.
MON NIGHT THROUGH TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. SEAS 5 TO 8 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-020000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
703 AM EDT FRI MAY 1 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
NW WINDS AROUND 10 KT, BECOMING W THIS AFTERNOON. SEAS
AROUND 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND NW 2 FT AT
3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND E
3 FT AT 9 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT AT
9 SECONDS AND SW 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND
SW 2 FT AT 5 SECONDS. RAIN. PATCHY FOG IN THE EVENING.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND NW 3 FT AT 4 SECONDS.
RAIN LIKELY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND W
3 FT AT 5 SECONDS.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT.
MON NIGHT THROUGH TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP
TO 35 KT. SEAS 5 TO 8 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-020000-
NANTUCKET SOUND-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS AROUND 10 KT, BECOMING W THIS AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND W 1 FOOT AT
4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND E 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
9 SECONDS. RAIN.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND NE 2 FT AT 9 SECONDS.
RAIN, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS AND W 2 FT AT 4 SECONDS.
MON THROUGH TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-020000-
VINEYARD SOUND-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT THIS
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS
AND S 1 FOOT AT 10 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND S
1 FOOT AT 10 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT
9 SECONDS. RAIN.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. RAIN LIKELY, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W
2 FT AT 5 SECONDS AND S 2 FT AT 9 SECONDS.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT.
MON NIGHT THROUGH TUE NIGHT
S WINDS 25 TO 30 KT. SEAS 3 TO
5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-020000-
BUZZARDS BAY-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT THIS
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS
AND SE 1 FOOT AT 10 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF
SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: S
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. RAIN.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: NW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. RAIN LIKELY, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 2 FT AT 4 SECONDS AND S 1 FOOT AT 9 SECONDS.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
TUE AND TUE NIGHT
SW WINDS 20 TO 25 KT, BECOMING S 25 TO
30 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-020000-
RHODE ISLAND SOUND-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS AROUND 10 KT, BECOMING SW THIS AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND NW 2 FT AT
3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
SE 2 FT AT 10 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. RAIN LIKELY.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND NW 2 FT AT 3 SECONDS.
RAIN LIKELY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS AND W 3 FT AT 4 SECONDS.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT.
MON NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT.
TUE
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT.
TUE NIGHT
S WINDS 25 TO 30 KT. SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-020000-
BLOCK ISLAND SOUND-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS AROUND 10 KT, BECOMING SW THIS AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND W 2 FT AT
3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND
SW 2 FT AT 3 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND S 1 FOOT AT
5 SECONDS. RAIN LIKELY.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND SE 2 FT AT 9 SECONDS.
RAIN LIKELY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT.
MON NIGHT THROUGH TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP
TO 35 KT. SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-020000-
BOSTON HARBOR-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT THIS MORNING,
THEN 1 FOOT OR LESS.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE OF
SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
1 FOOT OR LESS. A CHANCE OF RAIN IN THE EVENING, THEN RAIN LIKELY
AFTER MIDNIGHT.
SUN
NW WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. RAIN LIKELY, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS.
MON THROUGH TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-020000-
NARRAGANSETT BAY-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING W THIS AFTERNOON. WAVES
AROUND 2 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
AROUND 2 FT. RAIN LIKELY.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. RAIN LIKELY IN THE MORNING.
SUN NIGHT
W WINDS AROUND 10 KT. WAVES AROUND 2 FT.
MON THROUGH TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. WAVES 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-020000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
703 AM EDT FRI MAY 1 2026
TODAY
W WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG THIS MORNING
WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND W 1 FOOT AT 3 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: E 4 FT
AT 9 SECONDS AND SW 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SAT NIGHT
S WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND
S 1 FOOT AT 6 SECONDS. A CHANCE OF RAIN IN THE EVENING, THEN RAIN
AFTER MIDNIGHT.
SUN
N WINDS AROUND 10 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND
NW 2 FT AT 4 SECONDS. RAIN LIKELY, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND NW 3 FT AT
5 SECONDS.
MON THROUGH TUE NIGHT
S WINDS 25 TO 30 KT WITH GUSTS UP TO
40 KT. SEAS 5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-020000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
703 AM EDT FRI MAY 1 2026
TODAY
NW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND NW 1 FOOT AT 3 SECONDS. PATCHY FOG THIS MORNING
WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND SW 2 FT AT 4 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND SW 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SAT NIGHT
S WINDS AROUND 10 KT, BECOMING E WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT AT
9 SECONDS AND SW 2 FT AT 4 SECONDS. RAIN.
SUN
N WINDS 10 TO 15 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND
SW 2 FT AT 5 SECONDS. RAIN, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND W 3 FT AT
6 SECONDS.
MON THROUGH TUE NIGHT
S WINDS 25 TO 30 KT WITH GUSTS UP TO
35 KT. SEAS 5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-020000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
703 AM EDT FRI MAY 1 2026
TODAY
W WINDS AROUND 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS AND NW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS.
SAT
S WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: E 4 FT
AT 9 SECONDS AND W 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SAT NIGHT
SE WINDS AROUND 10 KT, BECOMING NE WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS AROUND 4 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND SW 2 FT AT 4 SECONDS. RAIN. PATCHY FOG IN THE
EVENING.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
4 FT, BUILDING TO 5 TO 7 FT IN THE AFTERNOON. WAVE DETAIL: NW
4 FT AT 4 SECONDS AND E 4 FT AT 9 SECONDS, BECOMING E 7 FT AT
9 SECONDS AND NW 4 FT AT 5 SECONDS. RAIN, MAINLY IN THE MORNING.
SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND W 5 FT AT
7 SECONDS.
MON
SW WINDS 15 TO 20 KT. SEAS 5 TO 6 FT.
MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 8 FT.
TUE
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 7 TO
9 FT.
TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-020000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
703 AM EDT FRI MAY 1 2026
TODAY
W WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND NW 2 FT AT 4 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 4 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS.
SAT
S WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT
AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SAT NIGHT
SE WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SW
4 FT AT 4 SECONDS AND E 4 FT AT 9 SECONDS. RAIN. PATCHY FOG IN
THE EVENING.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT, BUILDING TO 4 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: N 4 FT
AT 4 SECONDS AND E 4 FT AT 9 SECONDS, BECOMING NW 5 FT AT
5 SECONDS AND E 5 FT AT 9 SECONDS. RAIN IN THE MORNING.
SUN NIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: W 5 FT AT 6 SECONDS
AND E 5 FT AT 9 SECONDS.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT.
MON NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
6 TO 9 FT.
TUE
S WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 8 TO
10 FT.
TUE NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 8 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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